“Redacted,” paintings and drawings by Ahmed Alsoudani, Iraqi artist and MECA grad, through Dec. 8; “Winslow Homer’s Civil War,” wood engravings and prints, through Dec. 8; “A Taste for Modernism,” 62 works from the William S. Paley Collection at the Museum of Modern Art in New York, through Sunday, Portland Museum of Art. portlandmuseum.org

“Tell Me a Story: About Maine,” works by 14 artists who have illustrated children’s books about Maine, University of Southern Maine (Atrium Art Gallery), Lewiston. usm.maine.edu/atriumgallery. Through Nov. 23.

“The Lunder Collection,” 19th- and 20th-century art; “Spaces and Places,” Chinese art; and “American Weathervanes,” weathervanes from the late 19th century, through June 8; “A Thing Alive: Modern Views from the Marin Collections,” and works by John Marin, Berenice Abbott, Eugene Atget, Alfred Stieglitz and others, through Tuesday; “Nowhere But Here: Art from the Alex Katz Foundation,” works by Marsden Hartley, Arthur Dove, Elizabeth Murray, Ben Pier and others, through Jan. 5; “Alex Katz: “A Matter of Light,” 48 prints, drawings and paintings, through Sept. 15; and “Process & Place,” exploring the design evolution of the Alfond-Lunder Family Pavilion, through Oct. 13, Colby College Museum of Art, Waterville. colby.edu/museum

“A Mountain Rises: The Art of Katahdin,” 80 historic and contemporary works that represent Mount Katahdin and the surrounding region, through Oct. 27; and Annual Sculpture Garden Invitational, works by 10 artists, through Oct. 31, University of New England Art Gallery, Portland. une.edu/artgallery

“Maine Voices from the Civil War,” letters, documents, diaries, sketches, paintings, flags and other objects from the period, Maine State Museum, Augusta. mainestatemuseum.org. Through May 2015.

“Decorating the Everyday: Popular Art from the Farnsworth,” furniture, paintings and textiles, through Sept. 22; “Every Picture Tells a Story,” N.C. Wyeth illustrations from the Brandywine River Museum, through Dec. 29; “A Wondrous Journey: Jonathan Fisher and the Making of Scripture Animals,” through Jan. 5; “American Treasures: Small Treasures,” through Dec. 29; “American Treasures: Other Voices,” through Feb. 2; “American Treasures: Visions of the Land and Sea,” through Feb. 2, Farnsworth Art Museum, Rockland. farnsworthmuseum.org

“Mentor: 40 Photographers/40 Years,” works of some of Maine Media’s master teachers alongside works of their students; “Caleb Charland: From the Basement to the Backyard,” photography, Center for Maine Contemporary Art, Rockport. cmcanow.org. Through Sept. 22.

“Classic Yachts,” photographs by John Snyder, Keag River Gallery, South Thomaston. keagrivergallery.com. Through Sept. 30.

“A Community Collects,” selections by Henry Strater, Sean Beavers, John Laurent, Hal Carney and others from the York Hospital Collection; “Charles and Marcia: The Woodburys in Holland”; and “Emerging Artists 2013,” New England artists from traditional to experimental media, Ogunquit Museum of American Art. ogunquitmuseum.org. Saturday through Oct. 31.

“Seacoast Moderns,” group show, York Public Library. york.lib.me.us. Tuesday through Oct. 28.

“Beyond the Horizon,” exploring the horizon and what lies beyond through landscapes and abstracts by Rachel Smith Maher and David Maher, Bard Coffee, Portland. bardcoffee.com. Through Oct. 31.

“Stories of the Land and Its People,” paintings, prints, photography, assemblage and digital works that blur the divide between painting and photography by Maine Artist Collection members, Constellation Gallery, Portland. constellationart.com. Through Sept. 23.

Crossroads International Celtic Festival, traditional and modern music and storytelling in the Irish, Scottish, Quebecois, Acadian and Cape Breton traditions, various locations, western Maine. Visit website for complete schedule: crossroadscelticfestival.com. Wednesday through Sept. 15.

“How Much Does Your Building Weigh, Mr. Foster?”, documentary traces the rise of one of the world’s leading architects, Norman Foster, and his quest to improve the quality of life through design, Space, Portland, $8. space538.org. 7:30 p.m. Thursday.

Live simulcast of August Wilson’s American Century Cycle, collaboration between New York Public Radio, The Greene Space and playwright August Wilson’s estate, Portland Stage Company, Portland, pay what you can. portlandstage.org. “The Piano Lesson,” 7 p.m. Monday; “Two Trains Running,” 7 p.m. Wednesday.

“Rent,” musical, Waldo Theatre, Waldoboro, $10 to $15, under age 16 must be accompanied by an adult due to sexual content, adult themes and language. thewaldo.org. 7:30 p.m. Friday and Saturday. Runs through Sept. 21.

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